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Vishay Siliconix SI1865DDL-T1-BE3
- Part No.:
- SI1865DDL-T1-BE3
- Manufacturer:
- Vishay Siliconix
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
SI1865DDL-T1-BE3.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,699
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Product details
Overview
SI1865DDL-T1-BE3 from Vishay Siliconix is a dual-MOSFET load switch with integrated level-shift functionality, combining a p-channel TrenchFET (RDS(on) = 0.200 Ω at VIN = 4.5 V) and an n-channel MOSFET in a single SC-70-6 package. It operates from 1.8 V to 12 V input, accepts 1.5 V to 8 V logic-level control, delivers ±1.1 A continuous load current, and features 2000 V HBM ESD protection on the ON/OFF pin - ideal for high-side power management in space-constrained portable devices.
For engineers reviewing the SI1865DDL-T1-BE3 datasheet, SI1865DDL-T1-BE3 pinout, SI1865DDL-T1-BE3 application, or SI1865DDL-T1-BE3 equivalent, this device enables compact, slew-rate-adjustable load switching with minimal external components - critical for battery-powered consumer electronics requiring precise inrush control and low-voltage logic compatibility.
Technical Context
The SI1865DDL-T1-BE3 integrates two complementary MOSFETs: a low-RDS(on) p-channel device optimized as a high-side load switch, and an n-channel device configured as a level-shifter to drive the p-channel gate using low-voltage logic (≥1.5 V). Its operation relies on external R2 (0–100 kΩ) and optional C1 (1000 pF) to set slew rate, enabling tailored rise/fall times for different capacitive loads.
Thermal performance is defined by RthJA = 350 °C/W (max) and RthJF = 300 °C/W (max), with absolute maximum ratings including VIN = 12 V, VON/OFF = 8 V, and TJ = –55 to +150 °C. The device supports pulsed load currents up to ±5 A under specified pulse conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS Rating | 12 V - supports input rails up to 12 V without breakdown |
| RDS(on) @ 4.5 V | 0.200 Ω - enables <110 mV dropout at 1.1 A, minimizing power loss |
| Logic Input Range | 1.5 V to 8 V - interfaces directly with 1.8 V, 2.5 V, 3.3 V, and 5 V microcontrollers |
| Continuous Load Current | ±1.1 A - sufficient for USB peripherals, display backlights, and sensor modules |
| ESD Protection | 2000 V HBM on ON/OFF pin - enhances robustness in handheld assembly and end-use environments |
| Package | SC-70-6 - 2.0 × 2.1 mm footprint, 0.95 mm height, suitable for ultra-thin portable PCBs |
| Slew Rate Control | Externally adjustable via R2 (0–100 kΩ) and C1 - prevents voltage droop and EMI during hot-swap events |
Pinout & Package
SI1865DDL-T1-BE3 is housed in a lead (Pb)-free, halogen-free SC-70-6 package (JEDEC MO-203AA), with 0.65 mm pitch, 2.0 mm × 2.1 mm body, and 0.95 mm max height. Pin 1 is marked with a dot; top view orientation matches standard SC-70 pin numbering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | ON/OFF (n-ch gate) | Logic-level input controlling n-channel MOSFET; drives p-channel gate via internal connection |
| 2, 3 | Source of n-channel (S2) | Connected internally to GND; provides reference for level-shift circuit |
| 4 | Drain of p-channel (D1) | High-side switch output - connects to load; carries full load current |
| 5 | Source of p-channel (S1) | Input supply rail (VIN); must be decoupled near device for stability |
| 6 | Drain of n-channel (D2) | Internally connected to p-channel gate; forms active level-shift stage |
Key Features
| Feature | Design Value |
|---|---|
| TrenchFET® p-channel technology | Delivers 0.200 Ω RDS(on) at 4.5 V, reducing conduction loss vs. planar alternatives |
| Integrated level-shift architecture | Eliminates need for discrete level-shifter IC or resistor-divider network, saving ≥3 BOM items |
| Adjustable slew-rate control | External R2/C1 sets turn-on/turn-off timing to match load capacitance and prevent bus collapse |
| 1.5 V logic-compatible input | Enables direct interface with modern ultra-low-voltage MCUs (e.g., ARM Cortex-M0+) without level translators |
| 2000 V HBM ESD protection | Meets IEC 61000-4-2 Level 4 requirements for handheld product handling and field reliability |
Applications
| Smartphone Power Rail Switching | USB OTG Peripheral Enable |
|---|---|
Use Scenario: Enabling/disabling camera module or audio codec power rail during sleep/wake transitions. IC Role / Device Role / Timing Role: High-side load switch with controlled slew to limit inrush into 100–500 µF local bulk capacitance. Use Value: Prevents system voltage droop below 2.8 V during hot-plug, avoiding brown-out resets in baseband processors. |
Use Scenario: Activating USB OTG accessory power only when host negotiation completes. IC Role / Device Role / Timing Role: Logic-controlled power gate with 1.8 V compatible enable signal from USB controller. Use Value: Ensures VBUS is not asserted prematurely, meeting USB 2.0 enumeration timing and power budget constraints. |
| Wearable Sensor Hub Power Management | Bluetooth LE Module Enable |
Use Scenario: Sequencing power to inertial measurement unit (IMU) and environmental sensors in fitness trackers. IC Role / Device Role / Timing Role: Dual-rail switch enabling independent control of analog and digital sensor domains. Use Value: Reduces quiescent current to <1 µA in off-state while supporting fast (<10 µs) wake-up response. |
Use Scenario: Turning on Bluetooth LE radio only during advertising or connection intervals. IC Role / Device Role / Timing Role: Low-RDS(on) load switch driven by GPIO from BLE SoC operating at 1.8 V logic. Use Value: Achieves <50 mΩ effective on-resistance at 1.8 V VIN, minimizing voltage drop across 300 mA peak transmit current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load-switch-with-level-shift applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si1867DDL-T1-BE3 | RDS(on) = 0.145 Ω @ 4.5 V; same SC-70-6 package and pinout | Better efficiency at higher currents (>800 mA); identical control interface and thermal profile | Select when lower conduction loss is prioritized over cost sensitivity |
| TPS22967DSGR | Single-channel, 12 V, 2 A load switch with integrated slew control; 1.8 V logic compatible; WSON-8 package | No level-shift function - requires external logic translation for sub-1.8 V controllers; larger footprint | Choose when higher current rating and factory-programmable slew are required, and board area permits 2.0 × 2.0 mm WSON |
Compared with SI1865DDL-T1-BE3, Si1867DDL-T1-BE3 offers lower RDS(on) but identical integration and layout; TPS22967DSGR trades level-shift capability for higher current and programmability, requiring PCB redesign due to different package and pin count.
Availability
SI1865DDL-T1-BE3 is available at Aetrix Electronics and suitable for smartphone power sequencing, wearable sensor hub enablement, and USB OTG peripheral control requiring stable component supply, consistent lead-time visibility, and long-term industrial lifecycle support.
Supply support for SI1865DDL-T1-BE3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay Siliconix is a global leader in discrete semiconductors, specializing in MOSFETs, diodes, optoelectronics, and passive components with emphasis on power efficiency and reliability.
The SI1865DDL-T1-BE3 belongs to Vishay's TrenchFET® Load Switch family, engineered specifically for space-constrained, battery-operated consumer electronics needing integrated level-shift and adjustable slew-rate control.
FAQ
What is the maximum input voltage the SI1865DDL-T1-BE3 can handle?
The SI1865DDL-T1-BE3 has an absolute maximum input voltage (VIN) rating of 12 V, as specified in its Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable long-term use, design margins should keep VIN ≤ 10.8 V under worst-case conditions. The SI1865DDL-T1-BE3 maintains stable RDS(on) performance across its full 1.8 V to 12 V operating range.
Can the SI1865DDL-T1-BE3 be used with a 1.2 V logic controller?
No - the SI1865DDL-T1-BE3 requires a minimum ON/OFF input voltage of 1.5 V to ensure proper n-channel MOSFET turn-on and reliable p-channel gate drive. A 1.2 V controller falls below the guaranteed functional threshold and may result in incomplete switching or increased RDS(on). For 1.2 V systems, external level translation or a different load switch such as the NX3P185UK is required. The SI1865DDL-T1-BE3 is validated for 1.5 V to 8 V logic compatibility.
How is slew rate adjusted on the SI1865DDL-T1-BE3?
Slew rate on the SI1865DDL-T1-BE3 is set externally using resistor R2 between pins 1 (ON/OFF) and 6 (D2), optionally with capacitor C1 from pin 6 to ground. Typical R2 values range from 0 to 100 kΩ; increasing R2 lengthens turn-on/turn-off times. At VIN = 2.5 V and R1 = 20 kΩ, tr/tf vary from ~1.5 µs (R2 = 0 kΩ) to ~14 µs (R2 = 100 kΩ). The SI1865DDL-T1-BE3 datasheet provides detailed curves for R2 vs. timing across multiple VIN conditions.
Does the SI1865DDL-T1-BE3 include reverse-current blocking?
Yes - the SI1865DDL-T1-BE3 provides inherent reverse-current blocking via its p-channel high-side configuration. When disabled (ON/OFF = low), the p-channel MOSFET's body diode is reverse-biased, preventing current flow from VOUT to VIN. This protects upstream supplies during hot-swap or fault conditions. Reverse leakage is limited to ≤1 µA at VIN = 12 V, ensuring minimal standby drain. The SI1865DDL-T1-BE3 does not require external diodes for this function.
What is the thermal resistance of the SI1865DDL-T1-BE3 in typical PCB layout?
The SI1865DDL-T1-BE3 has a maximum junction-to-ambient thermal resistance (RthJA) of 350 °C/W under standard JEDEC test conditions (single-layer 1 in² copper pad, FR4 board). In a well-designed layout with 2 oz copper, thermal vias under the exposed pad (pins 2/3), and 2 in² of copper pour, RthJA can improve to ~220 °C/W. The SI1865DDL-T1-BE3 junction temperature must remain ≤150 °C; at 1.1 A and 0.200 Ω RDS(on), PD = 242 mW, requiring ≤414 °C/W margin - easily met with basic thermal relief.
SI1865DDL-T1-BE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- TrenchFET®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 1.8V ~ 12V
- Voltage - Supply (Vcc/Vdd):
- 1.5V ~ 8V
- Current - Output (Max):
- 1.1A
- Rds On (Typ):
- 165mOhm
- Input Type:
- -
- Features:
- Slew Rate Controlled
- Fault Protection:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
SI1865DDL-T1-BE3 FAQ
1.How can I place an order for SI1865DDL-T1-BE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI1865DDL-T1-BE3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI1865DDL-T1-BE3 reliable?
The price and inventory of SI1865DDL-T1-BE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI1865DDL-T1-BE3 is usually 5 days.
3.What payment methods are accepted for SI1865DDL-T1-BE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI1865DDL-T1-BE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI1865DDL-T1-BE3?
SI1865DDL-T1-BE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI1865DDL-T1-BE3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI1865DDL-T1-BE3?
For technical support, including SI1865DDL-T1-BE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI1865DDL-T1-BE3 requirements.
6.How does Aetrix verify that SI1865DDL-T1-BE3 is sourced from the original manufacturer or authorized distributors?
All SI1865DDL-T1-BE3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI1865DDL-T1-BE3 meets industry standards.
7.What is the process for return or replacement of SI1865DDL-T1-BE3?
All SI1865DDL-T1-BE3 units undergo pre-shipment inspection (PSI). If there is an issue with SI1865DDL-T1-BE3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI1865DDL-T1-BE3 part is unused and in its original packaging.
Return procedure for SI1865DDL-T1-BE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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